Brush



H. sHAPlR June 2, 1925.

BRUSH Filed Sept. 6, 1925 2 Shets-Sheet 2 NNW xv mw v WHNEssEs N @g/mf N [Afina/Wrox? ra 150i? I EIS 1 HORA/EY.

Patented Junel 2', 1925.

` UNITED STATES PATENT OFFICE.

HENRY SHAPIRO, OF PHILADELPHIA, PENNSYLVANIA.

BRUSH.

Application filed September 6, 1923. Serial No. 661,126.

` To a/ZZ whom t may concern.'

Be it known that I, HENRY, SHAPIRO, a

. citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Im rovements in Brushes, of which the following `is a specifi? cation.

My invention relatesto brushes, more particularly to tooth brushes of the .type in'I which the paste is fed to the bristles from the handle. The object is to provide a tooth brush of simple construction having paste feeding means which will not clog thebristles with paste, and to provide a brush handle which willreadily receive a new supply l. V of paste from an ordinary tube or be wholly removable as a paste cartridge.`

'5,andf'-l Figure-8 a section on line 8-8 ofFig- '-ure6."y.

Referri Vbristle hea having bristles 2 mounted at' These objects, and other advantageous ends vwhich will be described hereinafter, I attain in the following manner, reference bein had to the accompanying drawings in w ich Figure 1 is an inverted plan view of a brush constructed in accordance lwith my invention,

. Figure 2 a central section through the `brush shown in Figure 1,

Fi re v3 a'section on line 3.-3 f Figure 2, il ustrating the trap door in an open i position, Fiure 4 a view similar to Figure 3 showin t e trap door in a closed position,

'igure 5 an enlarged fragmentary section similar to that shownin Figure 2,

Fi ure 6 a view similarto Figure 5 s how-f `int e parts moved into another position,

igure '7 a section on line 7-7 `o Figure to the Adrawings 1 indicates a one end and a tubular feed 'screw 3 screwedv into the other end. The feed screw is pro. vided with a' bearing part 4, a flange 5, a

:threaded part. 6, a counter-bore 7, and` an opening 8. A collar 9 is rotatably mounted on the bearing 4 between the flange 5 andv the end of the head and is provided with a' knurled part 10-and a threaded partll for receiving 'one end 12 of a tubular or hollow handle 13 which has pressed therein longitudinal ribs 14.v The other end 15 ofv the handle 'is threaded to receive a -knurled cap 16 having a recess 17 for receiving the end of the feed screw and an opening 18 to serve as a passage f or air to and from the housing. A threaded piston 19 travels on the threaded part 6v of the feed screw and is provided with notches 20 in its circumference for reeliving thelongitudinal ribs l14 on the hantively to the handle and the fee screw, slid- .ably keys it to the handle but holds it in threaded engagement with the feed screw.- Thus by turning the handle, the iston will travel on the threaded vpart otP the feed vscrew and force the paste out of thehandle.

A delivery tube 21 is slidable within the bristle Vhead and the feed screw and has one end provided` with a needle point 22 and an-v outlet 23 and the other end provided with an enlarged part 24, slidable within counterl bore 7, and an inlet 25. Theinletis adapted to communicate with the opening 8 in the This disposition of the (piston, rela-f feed screw when the delivery tube is pulled I into its extended position, as shown in Fig i ures 1 and 2, so that paste may be fed onto the bristles. To pull the delivery tubeinto this position or push it back into the bristle head, I provide a lug 26 secured to the de' livery tube and ada ted to travel within a slot 27 in the bristle ead.

To prevent dust or other material vfrom accumulating yon needle point 22, when the tube is in its closed position, I provide a trap doorv 28 of' any suitable construction to close the opening as shown in Figures 3 and 4.

To use 'the brush, delivery tube 21 is pulled out ofthe bristle head until the enlarged part'24 abuts the end of counterbQre 7. The handle 13 isl then rotated to force paste out of opeiiin 23, and said tube 21 is slid back into the bristle head. During this movement the paste around outlet 23 will be scrapedffromfthe needle point by the bristles as it passes therethrou h and the inlet 25 will leave' opening 8 in t e feed screw and cut o f communication therewith. After 'the delivery tube has entered the bristle head, the trap door 28 wi11 close behindthe needle point and the brush is vthen ready for use.

During the slidingmovement ofthe de;

liveryA tube within `the feed screw,` the airdisplaced'within the feed screw by the 'dei livery tube is permitted to pass out through opening 18 in the cap. i To replenish the paste supply with an ordinarytube, cap 16 is removed'from the ioo y handle and the handle turned, opposite to the feeding direction, until the iston comes .out of the handle. The handle 1s then filled -with paste from an ordinary tube and the l from the threaded part of the feed screw.

. and hence The cartridge which is similar to the handle it then screwed onto the collar. The other end of the cartridge, which is provided with a cap similar to cap 16, is removed and the piston screwed onto the feed-screw. The cap is -thenI replaced and the cartridge is ready for use. l

A brush constructed as above described will not clog the bristles with paste, is simple in construction, and cheap to manufacture. l While I have described my invention as taking a particular form, it will be understood that the various partsmay be changed without de arting from the spirit thereof,

do not limit myself to the precise construction set forth, vbut consider that I am at liberty to make such changes and altera-tions :1s-fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is l'. A brush including a bristle head; a hollow handle rotatably connected thereto; a delivery tube movable in the head and -ada ted to communicate with the interior of t e handle when moved to open position and cut olf communication therewith when moved to closed position; and means within said handle and actuated byrotation of said handle for feeding material through the de- 2. A brush including a bristle head; a hollow handle rotatably connected thereto;

f a tubular feed screw having one end mountclosed position; and means movable on said feed screw byrotation of said handle for feeding material through the delivery tubei 3. A brush including a bristle head; a hollow handle rotatably connected thereto;

a. tubular feed screw having one end mounted on the |head and the free end projectingl Awithin the handle and having an opening in its side; a delivery tube slidable within the head and the feed screw and adapted to communicate with the opening when slid to open position and cutl oli communication therewith when slid to closed position; and a threaded piston adapted to travel on the feed screw, and slidably keyed to the handle,

lto communicate with said oening when slid by rotation of said handle for feeding mafof) feeding material through' the delivery tu e.

4. A brush including a bristle head; a hollow handle rotatably connectedthereto; a tubular feed screw connected to the head and extending within the handle and having .a counter-bore and an opening in its side; a

deliverytube slidable within the head and having an enlarged part slidable within the counter-bore, the delivery tube being adapt- 7j ed to communicate with the opening wh' slid to open position and cut olil communication therewith when slid to closed position; and means for feeding material through the. delivery tube.

5. A brush including a bristle head; a tubular feed screw mounted stationary on said bristle head and having aside opening and a cylindrical.. bearing portion; a hollow handle mounted on said head with means rotatably engaging said bearing portion; a delivery tube within the head and feed screw yand adapted to communicate` with .said opening; and means on said feed screw actuated -by rotation of said handle for forcing material from the handle through. the delivery tube..

6. A brush including a bristle head; a tubular feed vscrew mounted stationary thereon and having aside opening and a 95 material from the handle through the delivery tube.

7. A brushincluding a bristle head; a tubular feed screw mounted stationary on said head and having an opening in its side and a bearing portion; a hollow handle rotatably mounted with means at one end on said bearing portion; a cap secured to the other end of said handle and having an air vent communicating with the interior of the feed screw; a delivery tube slidable wit-hin said head and said feed screw and adapted to open position and cut o communication therewith when slid to closed position; and means within the handle which is actuated terial through the delivery tube.

8. Aibrush including a bristle head; a tubular feed screw mounted. vstationary thereon and provided with a side opening and a bearing portion and a Harige; a collar rotatable on said bearing portion between said flange and said-bristle head; a hollow handle having one end detachably secured` to said collar; a delivery tube within the lfeed screw and adapted to communicatewith said opening when in open position and 130 cut or' communication'. therewith when inclosed position; and meansv movable on saidl feed screw by rotation of said handle for feeding materia-l through the delivery tube.

9. A brush including a bristle head; a hollow handle rotatably mounted thereon; a

tubular feed screw mounted on the head and projecting within the handle and having an opening; a delivery tube slidable in said head and said feed screw and having a pointed head with an outlet movable into said bristles and having a side opening near the other end, the opening in the delivery tube being adapted to communicate with the opening in the feed screw when the delivery tube is slid to open position and cut oil communication .therewith when slid to closed position; and means for forcing material through ther delivery tube.

10. A` brush including a bristle head; a tubular feed screw mounted stationary thereon and vprovided with a bearing portion and a side opening; a collar rotatably lmounted on said bearing portion; a hollow handle having one end removably secured to said collar; a. cap removably attached to the other end of said handle and having an air vent communicating with the interior of the feed screw; a delivery tube slidable within the feed. screw and having a side opening adapted to communicate with vsaid openlng when slid to open position and cut olf communication therewith when slid to closed position, and a piston slidably keyed to said handle and threaded to engage and move alongsaid'eed screw by rotation of said handle for forcing. material through the delivery tube.

In testimony whereof I have signed my name to this specification in the presence of 40 two subscribing witnesses.

Witnesses:

CHAS. E. Po'rTs,

ELIZABETH GARBE.

HENRYl sHAPrRo. 

